The week in pictures: 5 May 2013

An image from Nasa's Cassini mission of the spinning vortex of Saturn's north polar storm resembling a deep red rose of giant proportions surrounded by green foliage. Measurements have sized the eye at a staggering 1,250 miles (2,000 kilometers) across with cloud speeds as fast as 330 miles per hour (150 meters per second).Picture: AFP